为用适宜的渗透性试验方法检测混凝土的抗碳化能力，对现有各种混凝土渗透性试验方法进行了分析。指出表面吸水法能用来测量混凝土面层的吸水性，能反应混凝土表层（保护层）的渗透性和混凝土的抗碳化能力。对混凝土表面吸水试验标准进行了研究。指出混凝土试件宜采用100 mm ×100 mm ×100 mm的立方体，烘干温度宜为60℃，烘干时间宜为72 h。混凝土试件的浸水深度以2~5 mm为宜，吸水时间以1 h为佳，试验温度宜控制在20~25℃。%In order to obtain suitably experimental methods of permeability for detecting the concreteˊs anti-carbonation ability,the ex-isting experimental methods were analyzed. It points out the experiment of the surface water absorption can be used to measure the ab-sorbent of the concreteˊs surface layer,which can reflect the concreteˊs.anti-carbonation ability and surface(protective layer)permea-bility. The experimental standard of the surface water absorption was established. It is good that the concrete specimens are supposed to be 100 mm × 100 mm × 100 mm cube;the drying temperature is 60 ℃ and the drying time is 72 h preferably. What′s more the immer-sion depth of the concrete specimens is 2~5 mm preferably,water absorption time is 1h and the test temperature should be controlled at 20~25 ℃.
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